Is the following relation a function?

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth

Alex's monthly take home pay is $2,500. what is the maximum bad debt payment he can maintain without being in credit overload?